Update how addCacheableDependency is called

Problem/Motivation

In ResourceController we currently call $response->addCacheableDependency() 5 times, sometimes the parameters are arrays and therefore we need to loop through many times.

Proposed resolution

Create a helper addCacheableDependency method which accepts the response object, and an array of parameters.

protected function addCacheableDependency($response, $parameters) {
  if (is_array($parameters)) {
    foreach ($parameters as $parameter) {
        $this->addCacheableDependency($response, $parameter);
    }
  }
  else {
    $response->addCacheableDependency($parameters);
  }
}

We can then call this once in the controller with a huge array of arrays of arrays.